Carbureter.



No. 817,721. PATENTED APR. 10, 190 6.

J. G. LEWIS. GARBURETER.

' AIPLIOATIOH rum) FEB.10,1905.

2 SHEETS-SHEET 2.

Snwwfoz fZj/aadele Wilinzoseo u mm attozmu UNITED sTA rEs PATENT OFFICE.

Specification of Letters Patent.

Patented April 10, 1906.

Application filed February 10,1906- Serial No. 246,122. I

To all whmn it may concern: 1

Be it known that I, JAY CLAUDE LEwrs, a citizen of the United States,residing at Shelby, in the county of ltichland and State of Ohio, haveinvented new and useful Improvemen s in Carlmrehrrs,.of which thefolowing a specification.

This invention relates to carburetors.

The object of the invention is to improve the construction of suchdevices by rendering them capable of interchan eable use with either gasor a hydrocarbon liquid.

With the foregoing and other objects in view, which will appear as thedescription proceeds, the invention resides in the novel combination andarrangement of parts and in the details of construction hereinafterdescribed as a practical embodiment thereof.

In the accompanying drawings, forming a part of this specification,Figure 1 is a vertical section through a carbureter constructed inaccordance with the invention. Fig. 2 is a plan view thereof with thecoverplate removed. Fig. 3 a horizontal section on th line 3 3 of Fig.1.

Like reference -numerals indicate corresponding parts in the differentviews.

The reference-numeral 1 indicates a casing which may be of any suitablesize and-construction. The upper end of the casing 1 preferably isclosed by a cover-plate 2, hav-' ing' a nut 3 thereon for the receptionof a wrench or other suitable implement in loosening and removing thecoverplate.- At its lower end the casing 1 is rovided with a valve-seat3, which, pre erably, is coneshaped, as shown. Communicating with thevalve-seat 4 is an air-inlet 5, a hydrocarbonliquid inlet 6, and agas-inlet 7, which is in communication with any suitable source ofnatural or artificial gas. The air-inlet 5 is provided with acontrolling-valve 8, mounted upon a shaft 9, having onthe outer endthereof a resilient or spring handle 10, provided with a lug 11, adaptedto cooperate with any one of a series 0 notches 12 in an annular member13. The air-inlet 5 is also provided with a perforated diaphragm 14' toprevent the entrance of impurities to the casing 1 of the carbureter.

The hydrocarbon-liquid inlet 6, which communicates with the conevalve-seat 4, is controlled by a suitable needle-valve 15, having aresilient handle 16, cooperating with an annular member 17, as describedwith respect to the air-inlet valve 8. The gas-inlet 7 is controlled bya turn valve or cook 18, having. a resilient handle 19, cooperating withan annular member 20.

The casingl is provided with an outlet 21,

whichcommunicates with the engine-cylinder and is provided with aperforated diaphragm 22, as shown'in Fig. 1.

, Cooperating with the cone-shaped valveseat 3 in the casing 1 andadapted to control the air-inlet 5, thehydrocarbon-liquid inlet 6, andthe gasinlet 7 is a cone-shaped valve 23, having-a stem 24, whichextends upward through a bushing 25, formed on or secured to the centralportion of a perforated diaphra m 26, removably secured in the casing 1.xtending upwardly from the diaphragm 26 is a plurality of arms 27, whichsupport at their upper ends a collar 28, into which is screwed a bushing29, a suitablelock-nut 30 being provided to hold the bushing 29 securelywithin the collar 28. The upper end 31 of the valvestem 24, which isdecreased in size, extends through the bushing 29, as shown in Fig. 1.

If desired, the cone-shaped valve-seat 4 may be formed with one or moreannular grooves, such as 32-, said grooves permitting the liquid orgaseous fue to surround the valve-seat in readiness for the opening ofthe valve and the gas-inlet 7. 1 Constructed as above described theoperation of the im 'roved carbureter is as follows: If it be desire touse hydrocarbon liquid, the valve 18, controlling the gas-inlet 7, isclosed, and the valves 8 and 15, controlling the air andhydrocarbornliquid inlets 5 and 6, are opened. Forthisreasonthehydrocarbonliquid is permitted to enter the groove 32 in the conevalve-seat 4, and as soon as the valve 23 is opened by suction on thestroke of the piston in the en inc-cylinder the hydrocarbon liquid flowsown upon the diaphragm 14, where it is mixed With the air entering theinlet 5 and passing up into the casing 1. If it be desired to employnatural or artificial gas instead of the vapor generated from thehydrocarbon liquid, the valve 15 is closed and the valve 18 is opened,thus permitting the entrance of gas from the inlet 7 to be mixed withthe air entering from the inlet 5. 7 From the foregoing description itwill be apparent that the single cone-shaped valve 23 serves to controlthe air-inlet, the hydrocarbon-inlet, and the gasinlet.'

The reduced portion 31 of the valve-stem 24 is surrounded by acoil-spring 33, which bears at its upper end against the bushing 29 andserves to maintain the valve normally in closed position.

It Will be understood that an engine equipped with the improvedcarbureter of this invention can be used interchangeably with natural orartificial gas or hydrocarbon vapor, as desired. Furthermore, theimproved carbureter can be used with a mixture of liquid and gaseousfuel. v

Changes in the precise embodiment of invention illustrated and describedmay be made Within the scope of the following claim Without departingfrom the spirit of the invention or sacrificing any of its advanta es.

Having thus described the invention, W at is claimed as new is- Acarbureter comprising a casing, a coned I valve-seat therein, a valvedair-inlet communioating with said valve-seat and having a perforateddiaphragm therein, a valved ydrocarbon-liquid inlet comio'ating withsaid valve-seat, a valved gas-inlet communicating with said valve-seat,a periorated diaphragm in said casing having a bushing, a coned valvecooperating with said coned valve-seat and controlling the three inlets,a stem connected with said coned valve and rojecting through the bushinger said perorated diaphragm, supporting-arms on said last-mentioneddiaphragm, a collar supported by said arms, a bushing connected withsaid collar and surrounding the upper end of said valve-stem, and anoutlet from said casin having a perforated dieglliiragm therein.

%n testimony whereof I a my signature in presence of two witnesses.

J AY CLAUDE LEWISQ Witnesses N. B. MABEE, CHARLES J. ANDERSON.

